[16a-P04-1~5] 3.5 Ultrashort-pulse and high-intensity lasers

[16a-P04-3] Development of a High Sensitivity Method for Dual-Comb Spectroscopy Using a Free-Running Dual-Comb Fiber Laser

〇Naoki Takeshi¹, Ryusei Uchiyama¹, Kousuke Kubota¹, Yoshiaki Nakajima¹ (1.Toho Univ.)

Keywords:

Optical frequency comb,Dual comb fiber laser,Dual comb spectroscopy

In this presentation, we report on the development of a highly sensitive method for dual comb spectroscopy of hydrogen cyanide (HCN) gas using a compact and robust dual comb fiber laser with high frequency stability even in free-running operation. The method enables spectral integration by applying digital signal processing to the spectral data, and high-sensitivity absorption lines of HCN gas were obtained over a wide bandwidth of 40 nm.